A sound wave has a frequency of 20 Hz and a wavelength of 100 m. What is speed of the wave

the actual quantity of nitrogen, phosphorus, and potassium guaranteed to be applied to the maize field is 50 kg, 50 kg, and 25 kg, respectively.

For Nitrogen (N):

The percentage of nitrogen in the fertilizer is 20%. Therefore, the amount of nitrogen applied can be calculated as:

Nitrogen = (20/100) * 250 kg

Nitrogen = 0.2 * 250 kg

Nitrogen = 50 kg

For Phosphorus (P):

The percentage of phosphorus in the fertilizer is also 20%. Thus, the amount of phosphorus applied can be calculated as:

Phosphorus = (20/100) * 250 kg

Phosphorus = 0.2 * 250 kg

Phosphorus = 50 kg

For Potassium (K):

The percentage of potassium in the fertilizer is 10%. So, the amount of potassium applied can be determined as:

Potassium = (10/100) * 250 kg

Potassium = 0.1 * 250 kg

Potassium = 25 kg

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Answer:0.31929716947533243

Explanation:u shuldnt round this but this is the full answer

At equilibrium, a significant quantity of starting ketone will be present with the enolate in the first case.

Ketones are substances produced by the liver. It is formed when there is insufficient insulin in the body to turn sugar into energy.

In this case a substantial amount of ketone will exist along side the enolate at equilibrium.


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Answer:

True

Explanation:

All of the carbon in existence is continually recycled in the carbon cycle

All life on earth's uses Carbon compounds for basic biological processes so the answer is True

Anthropogenic greenhouse gas emissions refer to the release of greenhouse gases into the atmosphere due to human activities. These emissions mainly result from the burning of fossil fuels, deforestation, industrial processes, and agriculture. The primary greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases.

1) CO2 is the most significant anthropogenic greenhouse gas, primarily emitted from the combustion of fossil fuels such as coal, oil, and natural gas. This occurs during activities like electricity production, transportation, and manufacturing processes. Deforestation also contributes to CO2 emissions, as trees and plants absorb CO2 while they grow, and release it back into the atmosphere when they are cut down or burned.

2) Methane is another important greenhouse gas, mainly produced during the decomposition of organic matter in landfills, the digestive processes of livestock, and rice cultivation. The extraction and transport of fossil fuels, particularly natural gas, also result in methane emissions.

3) Nitrous oxide emissions primarily come from agricultural activities, such as the application of synthetic fertilizers and the management of livestock waste. Industrial processes and fossil fuel combustion also contribute to N2O emissions.

4) Fluorinated gases are synthetic chemicals used in various industrial applications, including refrigeration, air conditioning, and electronics manufacturing. Although emitted in smaller quantities, they are potent greenhouse gases with long atmospheric lifetimes.

5) Efforts to reduce anthropogenic greenhouse gas emissions include transitioning to renewable energy sources, increasing energy efficiency, and promoting sustainable land management and agriculture practices.

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All of the following are qualitative tests that are often used to identify unknown ionic compounds except titration.

Qualitative tests are conducted to determine the presence or absence of certain ions or compounds in a sample based on their characteristic reactions. Common qualitative tests include flame tests, precipitation reactions, color changes, and gas evolution tests.

Titration, on the other hand, is a quantitative technique used to determine the concentration of a specific substance in a solution by reacting it with a standardized solution of another substance. It is not typically used as a qualitative test for identifying unknown ionic compounds.

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The mass of the displaced fluid can be expressed in terms of the density and its volume, m = ρV. The fluid displaced has a weight W = mg, where g is acceleration due to gravity. Therefore, the weight of the displaced fluid can be expressed as W = ρVg.

An illustration of the electron configuration is called orbital notation. It is highly helpful in forecasting oxidation numbers and electron pairing. An electron configuration can be written using orbital notation to give more detailed information about the electrons in an atom.

The distribution of electrons in an element's atomic orbitals is described by the element's electron configuration. The sign of a noble gas enclosed in square brackets replaces the electrical configuration of that noble gas. However, long electron configurations are frequently produced by the usual notation.

The electron configurations, and noble gas notation for the following elements are:

1. 1s²2s²2p¹, [He] 2s² 2p¹

2. 1s²2s²2p⁶3s²3p², [Ne] 3s² 3p²

3. 1 s² 2s² 2p⁶ 3s² 3p⁴, [Ne] 3s² 3p⁴

4. 1s²2s²2p⁶3s²3p⁶4s², [Ar] 4s²

5. 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 5s² 5p⁵, [Kr] 4d¹⁰ 5s² 5p⁵

6. 1s² 2s²2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹, [Kr] 5s¹

7. 1 s² 2 s² 2 p⁶ 3 s² 3p⁶ 4s¹ 3d⁵, [Ar] 3d⁵ 4s¹

8. 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹,  [Ar]4s² 3d¹⁰4p¹

The orbital notations are given below:

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The name of the organic compound is 2-methyl pentane. The given organic compound is a five-carbon system with a substitution at the C-2 carbon. The naming of an organic compound is done according to the rules given by IUPAC.

The given organic compound has 5 carbon in its main chain. So It has the root word Pent. Since, all the bonds are single bonds, the organic compound is saturated, hence it has the suffix -ane. Hence the unsubstituted straight chain is pentane.

Numbering is done from right to left, because when the numbering is from right to left, the substituted carbon gets C-2, when it is numbered from left to right, the substituted carbon gets C-4. So the numbering is from the right and the substituted carbon is C-2. The substituent is a single carbon system, a methyl substituent. So the organic compound is named 2-methyl pentane .

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Answer:

D

Explanation:

Radioactivity means

the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei

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The product of this reaction can be maximized by;

1) Heating the system

2) Removal of some of the products of the reaction.

We know that a reaction is propelled in the forward or the reverse direction by the use of certain methods that see to it that the reaction moves in the forward or the reverse direction.

In this case, we can see that it is an endothermic reaction thus if we heat the system, then the reaction would be driven forward. If we remove some of the product, then the equilibrium would be driven to the right hand side.

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To make 2 moles of C6H12O6, we would need 12 moles CO2

Mole can be defined as the unit of amount of substance in the International System of Units. The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object.

According to the balanced chemical equation:

6CO2 + 6H2O → C6H12O6 + 6O2

The molar ratio between CO2 and C6H12O6 is 6:1. This means that for every 6 moles of CO2 used, 1 mole of C6H12O6 is produced.

Therefore, to make 2 moles of C6H12O6, we would need:

6 moles CO2/1 mole C6H12O6 × 2 moles C6H12O6 = 12 moles CO2

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Answer:

its C.

Explanation:

ur really pretty btw

Answer:

Mass = 40 g

Explanation:

Given data:

Mass of oxygen needed = ?

Mass of propane = 11 g

Solution:

Chemical equation:

C₃H₈ +5O₂   →     3CO₂ + 4H₂O

Number of moles of propane:

Number of moles = mass/molar mass

Number of moles = 11 g/ 44.1 g/mol

Number of moles = 0.25 mol

now we will compare the moles of propane and oxygen.

              C₃H₈        :          O₂

                  1           :            5

                0.25      :            5/1×0.25 = 1.25 mol

Mass of oxygen needed:

Mass = number of moles × molar mass

Mass = 1.25 mol × 32 g/mol

Mass = 40 g

Answer:

The reactants in the given equation are:

Carbon dioxide (CO₂)

Water (H₂O)

Answer:

1M

Explanation:

The molarity of a substance is defined as the number of moles of the substance divided by how many liters the solution is. NaOH has a molar mass of about 40 grams, meaning that 10 grams of it would be 0.25 moles. 0.25/0.25= a molarity of 1.

Hope this helps!

All the statements are about the acidity of compounds, of which statement 1, 3 & 4 are true and statement 2 is false.

Statement 1: "the strength of an acid depends primarily on the conjugate base's ability to support a negative charge" is true because, a strong acid has a weak conjugate base, which means it is less able to support a negative charge.

Statement 2: "induction is long range electronegativity, and the presence of electronegative atoms improves acidity of distant H" is false.

Because, induction is the ability of an electronegative atom or group to withdraw electron density from a neighbouring atom or group, leading to an increase in acidity.

However, this effect is not long range, and typically only affects neighbouring atoms.

Statement 3: "H bonded to larger atoms are more acidic due to poor orbital overlap, and polarizability of large orbitals" is true.

Because larger atoms have larger orbitals, which leads to poor orbital overlap and weaker bonds with hydrogen.

This makes it easier for the hydrogen to dissociate and increases the acidity of the compound.

Statement 4: "increasing the % of s-orbital character in a bond increases acidity" is true.

S-orbitals are closer to the nucleus and have a lower energy than p-orbitals, leading to stronger bonds and increased acidity.

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Answer:

D. Mitochondria

Explanation:

This is the one that makes the energy that powers the cell, aka, the powerhouse.

Answer:

Both b/c a chemical formula tells you how many and a sketch formula shows how they are bonded together.

Molecular formulas show how many atoms of each element one molecule of a compound contains. Note: Ionic compounds are generally crystalline solids with high melting points. Other compounds, however, have very different properties.

The sketch of the molecule like in the structural formula provides more information than the chemical formula of the molecule.

A structural formula can be described as a representation of a molecule that involves the arrangement of atoms and chemical bonds of a molecule. The structural formulas contain elemental symbols that represent the atoms that are connected by lines that represent the chemical bonds.

One line depicted a single covalent bond, whereas two and three lines represent double and triple bonds respectively. Molecular formulas can be described as a representation of the number of atoms of each element in a molecule.

For example, the molecular formula for water is H₂O and the molecular formula of isopentane is C₅H₁₀.

Molecular formulas do not show how the atoms of the elements are bonded together. Structural formulas represent that how exactly each atom is bonded to another atom. Therefore, the Structural formula provides more information about molecule.

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Answer:

Pollution comes from factories, careless humans, chemicals, non-biodegradable trash.

Explanation:

D. A liquid with something dissolved in it

A solution is a liquid with something dissolved in it.

The correct answer is D. A solution is a homogeneous mixture composed of two or more substances. It consists of a solvent, which is the component present in the larger amount, and a solute, which is the component that is dissolved in the solvent. In a solution, the solute particles are dispersed uniformly throughout the solvent, resulting in a single phase.

Solutions can be formed with various combinations of solvents and solutes. Common examples include saltwater (where salt is dissolved in water), sugar dissolved in coffee, and carbon dioxide dissolved in soda. In these examples, the solvent is water, coffee, and soda, respectively, while the solutes are salt, sugar, and carbon dioxide.

The formation of a solution occurs when the solute particles interact with the solvent particles, forming intermolecular bonds or attractions. These interactions allow the solute particles to become dispersed and distributed evenly throughout the solvent. As a result, the solute particles are no longer visible, and the solution appears uniform and transparent.

Solutions play a crucial role in various aspects of everyday life and scientific processes. They are widely used in industries, laboratories, and households for purposes such as cleaning, manufacturing, chemical reactions, and medicine. The ability to dissolve substances in a solvent and create solutions is a fundamental concept in chemistry and has important implications in fields such as biology, pharmacology, and environmental science.

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Answer:

i dont know

Explanation:

Answer:

Silicon conducts electricity as well as copper does.

Explanation:

you didn't gave any statements to choose the answer from.

but otherwise, what all I my knowledge says that Silicon conducts electricity as well as copper does.

Answer: it consists of two simple machines: a lever and a wheel and axle. Effort is applied to the lever by picking up the handles of the wheelbarrow.

Explanation:

Answer:

B

Explanation:

B)

Answer:333.3333 mL or 333mL

Explanation:

M1V1 = M2 V2

M1= 3.00 M

V2= 2500 ml

M2= 0.400M

V1= solving for

V1= M2V2/M1

0.400 X 2500 / 3.00  =

Option c) NH4Cl will hydrolyze when dissolved in water.

Hydrolysis is a chemical reaction that occurs when a salt reacts with water, resulting in the formation of an acidic or basic solution. In this case, when NH4Cl (ammonium chloride) is dissolved in water, it undergoes hydrolysis.

The ammonium ion (NH4+) is the conjugate acid of ammonia (NH3), which is a weak base. When NH4Cl dissociates in water, the ammonium ion reacts with water to form NH3 and H3O+ (hydronium ion). This process is called hydrolysis.

NH4+ (aq) + H2O (l) ↔ NH3 (aq) + H3O+ (aq)

The formation of NH3 leads to an increase in the concentration of hydroxide ions (OH-) in the solution, making it slightly basic. At the same time, the presence of H3O+ ions makes the solution slightly acidic. Therefore, the hydrolysis of NH4Cl results in a slightly acidic and slightly basic solution.

In contrast, salts like NaCl and KCl do not undergo hydrolysis when dissolved in water because they consist of cations (Na+ and K+) and anions (Cl-) that do not react with water to form acidic or basic species.

Na2SO4 (sodium sulfate) is also an example of a salt that does not undergo hydrolysis. The sulfate ion (SO42-) does not react with water to form acidic or basic species, so the solution remains neutral.

Therefore, among the given options, only NH4Cl undergoes hydrolysis when dissolved in water.

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The question is incomplete. Find the full content below:

Which one of the following salts when dissolved in water will hydrolyse?

a) NaCl

b) KCl

c) NH4Cl

d)Na2SO4

Answer:

Noble gases b/c its melts quicly that why enjoy